Title:
電圧検出装置
Document Type and Number:
Japanese Patent JP7172767
Kind Code:
B2
Abstract:
To provide a voltage detection device that can properly determine a leak failure of a capacitor constituting a frying capacitor.SOLUTION: A voltage detection device 20, which is applied to a battery pack 10, comprises: a capacitor CA; input side switches SW1 to SW7; a voltage detection unit 25; output side switches SWA and SWB; a first applying switch SWC that applies a high voltage to a first connection line LA; a second applying switch SWD that applies a low voltage to a second connection line LB; a capacitor charging unit that puts the input side switch to an open state, puts the output side switch, first applying switch and second applying switch to a closed state, and charges the capacitor by the high voltage and low voltage; a voltage acquisition unit that, after the capacitor is charged by the capacitor charging unit, puts the first applying switch and second applying switch to the open state, and acquires a determination voltage, which is a voltage of the capacitor,; and a leak failure determination unit that determines a leak of the capacitor on the basis of the determination voltage.SELECTED DRAWING: Figure 1
Inventors:
Shimizu Engineering
Application Number:
JP2019048993A
Publication Date:
November 16, 2022
Filing Date:
March 15, 2019
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01R31/64; G01R19/00; G01R31/396
Domestic Patent References:
| JP2017156297A | ||||
| JP2012167982A | ||||
| JP2016048174A |
Attorney, Agent or Firm:
Yamada Tsuyoshi
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita